/* ===== D.Cafe & Bistro - Design System ===== */
:root {
  --charcoal: #2C2C2C;
  --dark-wood: #3E2723;
  --gold: #D4A843;
  --amber: #F5A623;
  --cream: #FDF8F0;
  --offwhite: #FAF6F1;
  --text-dark: #1a1a1a;
  --text-light: #f5f5f5;
  --text-muted: #8a8178;
  --overlay: rgba(30, 20, 10, 0.7);
  --shadow: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.18);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Montserrat', 'Segoe UI', sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { cursor: pointer; border: none; font-family: inherit; }
ul { list-style: none; }
h1,h2,h3,h4,h5 { font-family: var(--font-heading); font-weight: 700; line-height: 1.3; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header .subtitle {
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 3px;
  color: var(--gold); font-weight: 600; margin-bottom: 12px; display: block;
}
.section-header h2 { font-size: 2.5rem; color: var(--charcoal); margin-bottom: 16px; }
.section-header .divider {
  width: 60px; height: 3px; background: var(--gold);
  margin: 0 auto; border-radius: 2px;
}

/* ===== Animations ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes bounce { 0%,20%,50%,80%,100% { transform: translateY(0) translateX(-50%); } 40% { transform: translateY(-12px) translateX(-50%); } 60% { transform: translateY(-6px) translateX(-50%); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 18px 0; transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(44, 44, 44, 0.95); backdrop-filter: blur(12px);
  padding: 10px 0; box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-family: var(--font-heading); font-size: 1.6rem; color: var(--gold); font-weight: 700; }
.logo span { color: var(--text-light); font-weight: 400; font-size: 0.9rem; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: var(--text-light); font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.5px; position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--gold); transition: var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--gold); }
.btn-book {
  background: var(--gold); color: var(--charcoal); padding: 10px 24px;
  border-radius: 30px; font-weight: 700; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 1px;
}
.btn-book:hover { background: var(--amber); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(212,168,67,0.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; }
.hamburger span { width: 28px; height: 2px; background: var(--text-light); transition: var(--transition); border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  justify-content: center; text-align: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; background-size: cover;
  background-position: center; background-attachment: fixed;
}
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,12,5,0.6) 0%, rgba(30,20,10,0.8) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 800px; padding: 0 20px; animation: fadeInUp 1s ease; }
.hero-content .tagline {
  font-size: 0.9rem; text-transform: uppercase; letter-spacing: 4px;
  color: var(--gold); margin-bottom: 20px; font-weight: 600;
}
.hero-content h1 { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; }
.hero-content h1 em { color: var(--gold); font-style: italic; }
.hero-content p { font-size: 1.15rem; color: rgba(255,255,255,0.85); margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  background: var(--gold); color: var(--charcoal); padding: 14px 36px;
  border-radius: 30px; font-weight: 700; font-size: 0.95rem;
  text-transform: uppercase; letter-spacing: 1px; transition: var(--transition);
}
.btn-primary:hover { background: var(--amber); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,168,67,0.4); }
.btn-outline {
  border: 2px solid rgba(255,255,255,0.5); color: var(--text-light);
  padding: 12px 34px; border-radius: 30px; font-weight: 600;
  font-size: 0.95rem; text-transform: uppercase; letter-spacing: 1px;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%); animation: bounce 2s infinite;
  color: rgba(255,255,255,0.6); font-size: 1.5rem;
}

/* ===== USP ===== */
.usp { background: var(--charcoal); }
.usp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.usp-card {
  text-align: center; padding: 40px 30px; border-radius: var(--radius);
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.usp-card:hover { transform: translateY(-8px); background: rgba(255,255,255,0.08); border-color: var(--gold); }
.usp-card .icon { font-size: 2.5rem; margin-bottom: 20px; display: block; animation: float 3s ease-in-out infinite; }
.usp-card h3 { color: var(--gold); font-size: 1.3rem; margin-bottom: 12px; }
.usp-card p { color: rgba(255,255,255,0.7); font-size: 0.95rem; }

/* ===== Menu ===== */
.menu-section { background: var(--cream); }
.menu-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 50px; flex-wrap: wrap; }
.menu-tab {
  padding: 10px 28px; border-radius: 30px; font-weight: 600;
  font-size: 0.9rem; background: transparent; color: var(--charcoal);
  border: 2px solid rgba(44,44,44,0.2); transition: var(--transition);
  text-transform: uppercase; letter-spacing: 1px;
}
.menu-tab.active, .menu-tab:hover { background: var(--charcoal); color: var(--gold); border-color: var(--charcoal); }
.menu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
.menu-grid-wrapper { display: none; }
.menu-grid-wrapper.active { display: block; }
.menu-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition); position: relative;
}
.menu-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.menu-card-img {
  position: relative; height: 220px; overflow: hidden; cursor: pointer;
}
.menu-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.menu-card:hover .menu-card-img img { transform: scale(1.08); }
.menu-card-img .badge-bestseller {
  position: absolute; top: 12px; right: 12px; background: var(--gold);
  color: var(--charcoal); padding: 4px 14px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
}
.menu-card-body { padding: 20px; }
.menu-card-body h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--charcoal); }
.menu-card-body .desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }
.menu-card-body .price { font-size: 1.2rem; font-weight: 700; color: var(--gold); font-family: var(--font-heading); }

/* ===== Lightbox ===== */
.lightbox {
  position: fixed; inset: 0; background: rgba(0,0,0,0.9); z-index: 2000;
  display: none; align-items: center; justify-content: center;
  animation: fadeIn 0.3s ease;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 90%; max-height: 85vh; border-radius: var(--radius); object-fit: contain; }
.lightbox-close {
  position: absolute; top: 20px; right: 30px; font-size: 2rem;
  color: #fff; cursor: pointer; z-index: 2001; background: none; padding: 10px;
}

/* ===== Promotion ===== */
.promo-section {
  position: relative; padding: 80px 0; overflow: hidden;
  background: linear-gradient(135deg, var(--dark-wood) 0%, var(--charcoal) 100%);
}
.promo-section::before {
  content: ''; position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 80 80"><circle cx="40" cy="40" r="1" fill="rgba(212,168,67,0.1)"/></svg>') repeat;
  background-size: 40px 40px;
}
.promo-content { position: relative; z-index: 2; text-align: center; max-width: 700px; margin: 0 auto; }
.promo-badge {
  display: inline-block; background: linear-gradient(90deg, var(--gold), var(--amber), var(--gold));
  background-size: 200% 100%; animation: shimmer 3s infinite;
  color: var(--charcoal); padding: 8px 24px; border-radius: 30px;
  font-weight: 700; font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 2px; margin-bottom: 24px;
}
.promo-content h2 { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; }
.promo-content h2 em { color: var(--gold); font-style: italic; }
.promo-content p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 30px; }
.countdown { display: flex; gap: 16px; justify-content: center; margin-bottom: 36px; }
.countdown-item {
  background: rgba(255,255,255,0.1); backdrop-filter: blur(10px);
  border: 1px solid rgba(212,168,67,0.3); border-radius: var(--radius);
  padding: 16px 20px; min-width: 80px; text-align: center;
}
.countdown-item .num { font-size: 2rem; font-weight: 700; color: var(--gold); display: block; font-family: var(--font-heading); }
.countdown-item .label { font-size: 0.7rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 1px; }

/* ===== Gallery ===== */
.gallery-section { background: var(--offwhite); }
.gallery-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; grid-auto-rows: 260px;
}
.gallery-grid .wide { grid-column: span 2; }
.gallery-item {
  position: relative; border-radius: var(--radius); overflow: hidden; cursor: pointer;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item .overlay {
  position: absolute; inset: 0; background: rgba(30,20,10,0.5);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.gallery-item:hover .overlay { opacity: 1; }
.gallery-item .overlay span { color: #fff; font-size: 0.9rem; font-weight: 600; letter-spacing: 1px; }

/* ===== Testimonials ===== */
.testimonials-section { background: var(--cream); }
.testimonial-slider { position: relative; max-width: 800px; margin: 0 auto; overflow: hidden; }
.testimonial-track { display: flex; transition: transform 0.5s ease; }
.testimonial-card {
  min-width: 100%; padding: 40px; text-align: center;
}
.testimonial-card .stars { color: var(--gold); font-size: 1.2rem; margin-bottom: 20px; letter-spacing: 4px; }
.testimonial-card .quote {
  font-family: var(--font-heading); font-size: 1.25rem;
  color: var(--charcoal); font-style: italic; margin-bottom: 24px;
  line-height: 1.8; position: relative;
}
.testimonial-card .quote::before { content: '"'; font-size: 4rem; color: var(--gold); opacity: 0.3; position: absolute; top: -20px; left: -10px; font-family: var(--font-heading); }
.testimonial-card .author { font-weight: 700; color: var(--charcoal); }
.testimonial-card .source { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.slider-dots { display: flex; justify-content: center; gap: 8px; margin-top: 30px; }
.slider-dot {
  width: 10px; height: 10px; border-radius: 50%; background: rgba(44,44,44,0.2);
  cursor: pointer; transition: var(--transition); border: none;
}
.slider-dot.active { background: var(--gold); transform: scale(1.2); }

/* ===== Booking ===== */
.booking-section { background: var(--charcoal); }
.booking-section .section-header h2 { color: var(--text-light); }
.booking-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.booking-form { background: rgba(255,255,255,0.05); padding: 40px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.1); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; color: var(--gold); font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 14px 18px; background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius-sm);
  color: var(--text-light); font-family: var(--font-body); font-size: 0.95rem;
  transition: var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--gold); background: rgba(255,255,255,0.12);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,0.4); }
.form-group select option { background: var(--charcoal); color: var(--text-light); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.btn-submit {
  width: 100%; padding: 16px; background: var(--gold); color: var(--charcoal);
  border-radius: 30px; font-weight: 700; font-size: 1rem;
  text-transform: uppercase; letter-spacing: 1.5px; transition: var(--transition);
}
.btn-submit:hover { background: var(--amber); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,168,67,0.3); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.form-message { margin-top: 16px; padding: 12px 18px; border-radius: var(--radius-sm); font-size: 0.9rem; display: none; }
.form-message.success { display: block; background: rgba(76,175,80,0.15); color: #81c784; border: 1px solid rgba(76,175,80,0.3); }
.form-message.error { display: block; background: rgba(244,67,54,0.15); color: #e57373; border: 1px solid rgba(244,67,54,0.3); }
.map-container { border-radius: var(--radius); overflow: hidden; height: 100%; min-height: 450px; }
.map-container iframe { width: 100%; height: 100%; border: none; }
.table-suggestion { margin-top: 12px; padding: 10px 16px; background: rgba(212,168,67,0.1); border: 1px solid rgba(212,168,67,0.3); border-radius: var(--radius-sm); color: var(--gold); font-size: 0.85rem; display: none; }

/* ===== Footer ===== */
.site-footer { background: #1a1714; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: var(--gold); font-size: 1.1rem; margin-bottom: 20px; }
.footer-col p, .footer-col li { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 2; }
.footer-col .footer-logo { font-family: var(--font-heading); font-size: 1.4rem; color: var(--gold); margin-bottom: 12px; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.08); display: flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7); transition: var(--transition); font-size: 1.1rem;
}
.footer-social a:hover { background: var(--gold); color: var(--charcoal); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0;
  text-align: center; color: rgba(255,255,255,0.4); font-size: 0.85rem;
}

/* ===== Floating Buttons ===== */
.floating-buttons { position: fixed; bottom: 24px; right: 24px; z-index: 999; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
  width: 52px; height: 52px; border-radius: 50%; display: flex;
  align-items: center; justify-content: center; color: #fff;
  font-size: 1.3rem; box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  transition: var(--transition);
}
.float-btn:hover { transform: scale(1.1); }
.float-btn.zalo { background: #0068ff; }
.float-btn.messenger { background: #0084ff; }
.float-btn.phone { background: #25d366; }

/* ===== Mobile Nav Overlay ===== */
.mobile-nav {
  position: fixed; inset: 0; background: rgba(44,44,44,0.98);
  z-index: 999; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 24px;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.mobile-nav.active { opacity: 1; visibility: visible; }
.mobile-nav a { color: var(--text-light); font-size: 1.3rem; font-weight: 600; }
.mobile-nav a:hover { color: var(--gold); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero-content h1 { font-size: 2.5rem; }
  .usp-grid { grid-template-columns: 1fr; gap: 20px; }
  .booking-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .gallery-grid .wide { grid-column: span 1; }
  .promo-content h2 { font-size: 2rem; }
}
@media (max-width: 576px) {
  .hero-content h1 { font-size: 2rem; }
  .section-header h2 { font-size: 1.8rem; }
  .section-padding { padding: 60px 0; }
  .menu-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .countdown { flex-wrap: wrap; }
  .hero-buttons { flex-direction: column; align-items: center; }
}